Portable-honing or lapping machine



ril 12 1927. AP 7 H. STRAND PORTABLE HONING 0R LAPPING MACHINE FiledDec. 10, 1924 3 ,shegts-shee t 1 uvmvrox ATTORNEY:

April 12', 1927.

- H. STRAND PORTABLE HONING OR LAPPING MACHINE Filed Dec. 10) 1-924 sShe ets-Sheet 2 ATTORNEY.

Agra 12, 1927.

H STRAND PORTABLE HONING OR LAPPING MACHINE INVENTOR.

ATTORNEY,

" 25- @In order tliafibhe invention iand of eperation'dnaiy be fieetdilyimdefisteod by persons skilled-in the ajr'fl, I have the a'ef'cempanying. il'liistrative rclnawin gs andl ini'the following detaileddescription bas ech thereon Patented Apr; 12, 1 92 7 HENRY swamp;ercm'vemm 01:

' PQMMLEHONIKG oe-mmmmcer 1 This invention relates ce improvementshoning 0'1 lapping machines haiv'ln'g for an object to vpi'o'vicl'e''poi' twblemeamswhereby the cylinders ef 2m iaiito'm'obile enginelapping machine wherein a' hening pistoe has a 'retzn y a-ndrieebililiea r movement; a

eylinclen. .v e v p .It is likewise:- an (Sbject 1: 0 providea lporb.able lapping imichin'e including flame 2'11} techable to a cylinderbleak and arranged to '1 transversely, andlongitutlih'wly shifted 'withrespect to the engine" hock. Other objects. be" in' part obvious-wildin'pa-nfi pointed (mt hereinafter. f itsm'o'de set 011%, onepossi'hlezemhodiment of thesa rhe. Figure 1' is??? side elevation otl1e-:assembl'ecllepp gine blCOk H i e v v Figure 2 is an end elevatlon0E the ena .ehine shown in Figure 1 7 frame; thelegs being. left only; 1Figurefi is w-clet'a-i-lperspecfilveview show;

; ing the S'tmijct-ur'e 0f, 2t clamp used: in eonnecr" i' fionitsecurely aF-slpeei zil frwinef-"Thisepi in 121 app eafiiem y I e result.ee'cum-t l laipp'ecl. i

machine Inbunte chuplan an- 911;;

F'gufre' is a slightly enlzirge'd ewes-see Figure 4c is view theinevethe heacl ofi enginefz'tnelfelempthe v p pp f 1,624,635/ PATENTLeena j lappingmachine 'lpenvtheblbck as clearlv shewnx in Figiu es 1and '2' of the aeeompenyusiizilor any pneferred form o f lztp open-1ndllyja t ritl transversely to accurately cen' tei j' ,tl1e1'n'a1nsha'ftlep ov'er anypazrticulail eylincle'ip At this? 'pointthe machine5isspertedep 'znndxe compound rotaiyend fee flihqiaw "motion 11s tlansmittedto" the leppi ng j L0bp0pemfinq mechanism. I This-mechanismconsists of a gear carry a: cylinder may ingli onedside Open and'seiviiflg'td house poritions-ofthe' gearsl Gastaintegi alwith'thissuppent alapplng took so' that it he gee? frame 19 atits-open side is ape'ir of ably attachable a; lapping tool 01:" piSCoHIl, .e'f enynsu'ahorpreferred types i weallyelinednppel 'andlowveh shefhbea'fl I@est'ineegrwllj with this gem iirem epr housing-is a, pwirfofverti'delly spaced upper end ln'werib'earings I5 and! 16' respectively'll-I WllliCh are nfm 'nte'cl Stub shafts 17 (and I6 2 The lewer'sfiubshaft-18 mg fined: cermectidfi r v wwith e-mitergear 19 whieh' in flurnmeshes with a miter. gea n' 2'0carnying asleeve 2 1 as j .sh'ow'n' inFigmesfi-endi 6; This sleeve 21 is of a) 7 length slightly gwe'ater thenphe lower sh arftbea-Tin'gim in which iserfethged 55nd ea nrises' zitlovveriendf ai retainingwing '0-1' V cellar 22-1W'h'ich prevents"aceidental relative shifting as "between said sleeve and hearing; Themain drive shaftl3 is providediwith a;

ment of; the ShaftsiihuEItaneQusIY with rdtaryrelhtivly"smell'spiirfgeir 26, the smhil'lgear a pintle 34 connected toa crank 35. This crank 35 is pinned or otherwise fixed to the projectingend of the upper stub shaft 17 as shown in Figures 1 and 3. To provideagainst'wobbling of the yoke 31 I removably secure at the opposite upperportions of the gear frame, retaining plates 36 which project inwardlytoward one another sufiiciently to serve as guides for said yoke. Theseplates are rested upon sets of bosses 37 into which retaining bolts 38are threaded.

With a structure as heretofore outlined it is clear that with startingof the motor 28 motion will be transmitted to the gears and 26 which inturn will efie'ct the above the piston.

stated rotary and rectilinear movement of As is apparent the rectilinearmovement is obtained through rotation of the crank which carries theslide block 33 as indicated in Figures 2 and 3. This blockmoves-longitudinally in the yoke 31 and effects a vertical movement ofthe yoke with respect to the gear frame, thereby moving the-sleeve 29and shaft 13 vertically. The rotary motion is obtained through meshingof the miter gears 19 and 20, as is obvious. With the arrangement of thegears25 and 26 as shown in Figure 2 the degree of rectilin- Vearmovement clearly exceeds the rotary movement and when it is desired toreverse the ratio, it may be readily accomplished through merelyreversing theposition of the gears 25 and 26, the result being thatthere will be considerably greater rotary movement of the lappingpistonwith a proportionate lesser degree of the rectilinear movement. Thearrangement of the'upper and lower shaft bearings 11 and 12 eliminatesthe usual slapping of the pistonand insures accurate honing of acylinder.

IQrS'upporting carry ring frame.

This frame is adapted to support the heretofore described operatingmechai'usm d1- rectlyupon an enginerblock and comprises a set of legs 39whose lower ends are provided with enlarged foot portions having pointedextremities 41 engageable with thevertical sides'of; an engine block E.The upper ends of the legs 39 are provided with enlarged head-portions42 having longitudinally alined channels orrways 43 designedto slidablymount main or base rails as shown inFiguresl and 2. While any number ofthese legs'might be employed in making up this supporting frame,l'preferably use two,

@pairs of which are arranged transversely .alined,e ach pair beinginter-connected by means of a lower transverse connecting rod 44 whichis designed to draw the supporting legs together and tightly engage thepointed extremities 41 of the feet 40 with opposite portions of theengine block E. At times it is necessary to move the legs outwardly andfor this purpose I provide upper screw threaded rods or bolts 45 whoseinner ends bear against the inner face of one of the legs 39 as shown inFigure 2.

Due to the difference in size of engine blocks it is necessary to varythe spacing of the legs 39 and in'order to effect such spacing, theadjusting screws 44 and 45 are rotated to move these legs insubstantially the same manner as in the ordinary well known wood clampused by cabinet makers.

In order to provide a connection between the piston operating mechanismand the supporting legs, such as will permit of longitudinal andtransverse shifting of said mechanism,"I provide a set of slide blocksand rails as shown in Figure 4. The main'or base rails 46 extendlongitudinally with respect to the engine block E and are each providedwith slots 47' for the reception of machine bolts or screws 48 which arethreaded into sockets formed in the ways or channels 43 ofthe'supporting legs 39. A set of slide blocks 43 is provided andincludes four substantially L-shaped blocks having relatively right,angularly arranged ways or grooves in the upper and lower faces, thelower way 49 being adapted to straddle the upper por tion ofithe baserail 46 'while the upper way- 'or groove 50 slidably seats a'pair.oftransverse supporting rails5 as clearlyshown in Figure 4.

Theseitransverse supporting rails 51are secured to the base flange 10 ofthe gearframe by means of machine screws or the 7 like as shown inFigures 1, 2 and-3'. It is obvious that with this structurethe transverse barsand slides togethenwith a :lap operating mechanism may beshifted longitudinally upon the base rails 46 to a position over acylinder, after which the transand inorder to accomplislrthis I providepair of clamping, devices which interlock the slides and several vrails.Each clamping device comprises a top plate 52 which as shown in dottedlines in Figure 4 andin full lines inFigure 1," rests upon the endportions of the transverse rails 51 and is connected by meansofa bolt 53with a bottomclampplate 54' whose structure is shown in Figure 5. Thisbottomplate 54 has a pair of fingers 56 which'extend beneath and contactwith the lower face of the main rail r 46, the parts being so heldthrough tightening of'the bolt 53. A pair of studs 5'Zis carried by thelower plate 754 and extends upwardly into engagement with the slides4-8" to prevent improper relative positioning of the plates'comp'risingthe clamping device.

lVith a lapping machine constructed in accordance with the foregoingspecification, it is possible to la-p the cylinders of any standardengine, the supporting legs and rails being relatively adjustable forfitting upon any sized cylinder block.

Manifestly, the construction shown is capable of 'COIlSlflQlfiblBmodification and such modification asv may fallcwithin the scope ofpivoted at one end to the cross-head, a rotary shaft fixed to the otherend of said crank, gearing arranged in the shell-like frame to effectreciprocation of the crosshead and rotation of the shaft, and externaldrive gear having drive connection to" the other gearing. i

2. In a portable lapping Vmachine, a shell- '1 like frame open at oneside, vertically alined bearings at the open side ofthe frame, an

axially movable shaft journalled in said bearings, a yoke having asleeve portion mounted on the shaft between said bearings,

means connecting said sleeve portion of the v yoke with the shaft sothat the shaft ca rotate in thei'sleeve and is held against axialmovement independently of the yoke, said yoke having a cross headportion movable vertically inthe open side of the frame, vertical.guides for cross head, said cross head having ahorizontal slot in itsinner face,- a block slidable in said slot, apintleon said lastnamed'block, ahorizontal rotary shaft supported in said frame, and acrank arm on its extremity with said pintle, whereby said yoke and saidfirst namedshaft will be reciproeated rotated. In testimony whereof,- Iaflix my signa-' ture.,

HENRY STRAND,

tosaid last named shaft having connection at whensaid second named shaftis i

